1 files changed, 29 insertions, 21 deletions
diff --git a/spec/ruby/core/env/slice_spec.rb b/spec/ruby/core/env/slice_spec.rb
index 1ac8a303f8..4c0416547d 100644
--- a/spec/ruby/core/env/slice_spec.rb
+++ b/spec/ruby/core/env/slice_spec.rb
@@ -1,29 +1,37 @@
 require_relative '../../spec_helper'
 
-ruby_version_is "2.6" do
-  describe "ENV.slice" do
-    before :each do
-      @saved_foo = ENV["foo"]
-      @saved_bar = ENV["bar"]
-      ENV["foo"] = "0"
-      ENV["bar"] = "1"
-    end
+describe "ENV.slice" do
+  before :each do
+    @saved_foo = ENV["foo"]
+    @saved_bar = ENV["bar"]
+    ENV["foo"] = "0"
+    ENV["bar"] = "1"
+  end
+
+  after :each do
+    ENV["foo"] = @saved_foo
+    ENV["bar"] = @saved_bar
+  end
 
-    after :each do
-      ENV["foo"] = @saved_foo
-      ENV["bar"] = @saved_bar
-    end
+  it "returns a hash of the given environment variable names and their values" do
+    ENV.slice("foo", "bar").should == {"foo" => "0", "bar" => "1"}
+  end
 
-    it "returns a hash of the given environment variable names and their values" do
-      ENV.slice("foo", "bar").should == {"foo" => "0", "bar" => "1"}
-    end
+  it "ignores each String that is not an environment variable name" do
+    ENV.slice("foo", "boo", "bar").should == {"foo" => "0", "bar" => "1"}
+  end
 
-    it "ignores each String that is not an environment variable name" do
-      ENV.slice("foo", "boo", "bar").should == {"foo" => "0", "bar" => "1"}
-    end
+  it "returns the values for the keys coerced with #to_str, but keeps the original objects as result keys" do
+    foo = mock('key 1')
+    foo.should_receive(:to_str).and_return("foo")
+    boo = mock('key 2')
+    boo.should_receive(:to_str).and_return("boo")
+    bar = mock('key 3')
+    bar.should_receive(:to_str).and_return("bar")
+    ENV.slice(foo, boo, bar).should == {foo => "0", bar => "1"}
+  end
 
-    it "raises TypeError if any argument is not a String and does not respond to #to_str" do
-      -> { ENV.slice(Object.new) }.should raise_error(TypeError, "no implicit conversion of Object into String")
-    end
+  it "raises TypeError if any argument is not a String and does not respond to #to_str" do
+    -> { ENV.slice(Object.new) }.should.raise(TypeError, "no implicit conversion of Object into String")
   end
 end